Imperial System Metric System - MR. MARTIN´S · SI Units Imperial System Metric System Length...
Transcript of Imperial System Metric System - MR. MARTIN´S · SI Units Imperial System Metric System Length...
American / English unitsScientific / International /
SI Units
Imperial System Metric System
Length inches, feet, miles cm, meters, kilometers
Volume fluid ounces, pints, quarts, gallons mL, liters, kL
Mass ounces, pounds grams, kilograms
Temperature Fahrenheit Celsius
Velocity mph kph
Metric System Chart
Metric System Chart
Metric System Chart
Meniscus = the curve of water in a graduated cylinder,
always read from the bottom
________
°C
1.
2.
3.
Practice reading these measurements:
Accuracy◦ How close a measured value is to a true value
Precision◦ How close measured values are to each other
◦ The more decimal points, the more precise a tool is
⚫2.34 grams vs. 2.3 grams
Low Accuracy
High Precision
High Accuracy
Low Precision
High Accuracy
High Precision
Accuracy Examples:• Boiling point of water is 100⁰C but the thermometer
reads 99⁰C• The recipe calls for ¾ cup of sugar but your sister accidentally
measures out ⅞ cup of sugarPrecision Examples:• Mr. McCutcheon says he has about 100 students but Mr.
Harabin knows that he only has 89• Jimmy measured the ounces of gold he had at about 10 but
Pauly knew that he had exactly 12.35
EXAMPLES:
Remember to count the movement of the decimal point and that becomes the exponent…. Left = + …. Right = -
Example 112,340 1.234
x 10⁴
Example 210,456,000 1.0456 x 10⁷
Example 30.00045 4.5 x
10-⁴
Density
Density